Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!haven!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: comma operator:  keep away?
Message-ID: <10092@smoke.BRL.MIL>
Date: 22 Apr 89 03:42:03 GMT
References: <19913@iuvax.cs.indiana.edu>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 9

In article <19913@iuvax.cs.indiana.edu> bobmon@iuvax.cs.indiana.edu (RAMontante) writes:
>Is there a circumstance in which the comma operator is required, where
>the compound statement cannot be broken into multiple statements?

You've got to be kidding -- a comma expression is an expression,
whereas multiple statements are not an expression.  Thus the comma
operator is useful in contexts where semicolon-terminated statements
would not be.  Look at the definition of putc() in most implementations
of <stdio.h> for an example.